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2D multi-scale simulation and homogenization of foamed concrete containing rubber bars

Mohd Jaini, Zainorizuan and Mokhatar, Shahrul Niza (2014) 2D multi-scale simulation and homogenization of foamed concrete containing rubber bars. In: InCIEC 2014 International Civil and Infrastructure Engineering Conference, 28 September - 1 October 2014, Kota Kinabalu, Sabah, Malaysia.

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Abstract

One of new innovation in modified concrete is foamed concrete containing rubber bars. The function of rubber on foamed concrete is to improve the strength and enhance the resistance toward high strain rate loadings. The production of foamed concrete containing rubber bars, therefore, leads to the heterogeneous material condition or so-called composite. Mostly, the investigations of strength and material properties of modified concrete are conducted using experimental approaches with various parametric and proportions. This study, however, intends to numerically analyse the strength and elastic properties of foamed concrete containing rubber bars through multi-scale simulation. The unit cell consists of foamed concrete and rubber bar was modelled using the hybrid finite-discrete element method. The damage model of rotating crack was defined on foamed concrete, while rubber bar remain as elastic. It was revealed that foamed concrete containing 5mm diameter of rubber bars with proportion below that 3% produces optimum strength. Results that obtained from multi-scale simulation show a favourable agreement with that obtained from experimental study and rule of mixtures.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: multi-scale simulation; foamed concrete; rubber bar; hybrid finite-discrete element method; material properties
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 12 Jan 2015 08:22
Last Modified: 12 Jan 2015 08:22
URI: http://eprints.uthm.edu.my/id/eprint/6159
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